Brake mechanism.



v No. 695,|30. Patencedv Mar. I|,-|902.

W. S. ADAMS. l

BRAKE MECHANISM.

(Application led July 27, 3.900.) (No Modei.) .3 Sheets-Sheet I.

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Patented Mar. Il, l902..

W. S. ADAMS.

BRAKEMEGHANISM.

(Application led July 27, 1900.)

3 Sheets--Sheet 2.

(No Modal.)

1m.' Norms vzzns co, worau'mo.. wAsmnc-Tomb. c4

W. S. ADAMS.

BRAKE MECHANISM.

(Application led Juliv 27, 1900.)

(lo Model.)

wimax@ L- v i TH: NoRms PETERS cc.. Fumo-urna., wnmsou. D. c.

Patented Mar. n, |902..

3 sheets-nes: a,

' auf and county of Philadelphia, State of Pen nsyl-j U'Nrrnn Sterns v`firmen,

lmarnnir VALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO lIOI'IN A. DRILL, OF PHILADELPHIA, PENNSYLVANIA.

BRAKE MEcHANlsNi.

SPEGEFIGATION forming part of Letters'Patent 1\T o. 695,130, dated March 11, 1902.

Application tiled July 27, 1900. Serial No. 25,000- (No modeLl T all whom, t may concern.:

3e it known that LWALTER S. ADAMS, acitizen of the United States, residing in the city vania, have invented certain new and useful Improvements in Brake Mechanisms,of which the following is a specification.

My invention relates to improvements' in elevation of a car-truck of a special type pro-y vided with myimproved brake. Fig. 2 is a plan view, partly in section.

Fig. 2; and `I"ig..4E is a side elevation of detached parts.` I have illustrated the improved brake in, connection with a truck in which large and small wheels and an eccentric pivot are employed, as ithas many features of especial utility in connection with this form of truck, as hereinafter set forth. However, it will be apparent the same may be advantageously employed in trucks of other constructions. Y As illustrated, the truck embodies'the side frames 1, having axle-box pedestals or yokes 2 for the axle-boxes 3 for the axle 4 of the large or driving wheel 5, the yokes 6 for the axle-boxes 7 for the axle S of the smaller or` trailing wheels 9, the yokes 2 having extensions 10, connected transversely by the angleiron cross-bar 11, having a base-web 12, secured directly to the recess 10 of the enlargement 10". The side bars l are transversely connected between the wheels by a cross-barl, havinginturned ends 14, bolted to the side bars, as shown in Fig. 2, the latter` cross-bar being bent down, as in Figs. 1 and 3, between Vthe side bars, all of which are of the usual 0r desired construction.

Fig. 3 is a sec-1 tional elevation substantially on the line 3 3,1

The brake is designed so as to be direct.L acting, in which the rods, brake-beams, and shoes all move in the same direction..

In the illustrated embodiment of my in-` vention, is the brake-beam, and 16 the suitably-connected brake-shoes, for the large wheels 5, and 17 the brake-beam, and 18 the brake-shoes, for the small wheels 9, (both sets of shoes moving in the same direction,) eachA set of shoes moving in the same d irection to or from the tread of the wheels.

At 19 are the brake-rods longitudinally disposed and located adjacent the wheels to allow clearance for the motor, dac., which rods.

comprise the front and rear sections 20 2l, adjustably connected together intermediate their extremities by the turnbuckles 22 in well-known manuel'. As both rods and the "devices operated thereby are of the same construction and relative location, a description beam,the extension 25 of the rod-section passing loosely through the bore 26 of a thrustblock or casting 27, the latter having an upright arm 2S lipped over the web 12 of the cross-bar 11, to which the arm is securely bolted or otherwise fastened. The outer end of the block 27 is recessed, as at 29, to form a spring-seat for the spiral (or other form, it' desired) spring 30 for the large wheel-brake shoes 16, the outer end of the spring bearing against a spring cup or follower 3l, secured to extension 25, the spring surrounding the rod. Thus the brake-beam 15 and shoes 1G are supported by the brake-rods which have their bearings in the blocks 27, and said beam and shoes partake of the longitudinal movements of the brake-rods, owing to the firm connection of the beam with the rod. The rod-section 2l has between its extremities a vertically-slotted yoke 32, through the walls 33 of which passes a pin 34, on which is pivotally mounted an upright lever 35, pivotally secured below the pin 34 to the jaw 3G of a pivot-block 37 by means of the pin 3S, the

pivot-block having a lower jaw 39, which embraces the cross-bar 13 and to which it is secured, as shown in Fig. 3.

As shown in Fig. 3, the rod-section 21 is expan ded laterally-and vertically to provide sufiicient metal for the formation of the yoke 32, the slot in which through which the lever 35 passes being shown at 32a, Fig. 2, the yoke having a pendent extension 40, from the face of which extends a thrust-bar 41, located below the plane of the rod-section 2l, the bend or gooseneck thus formed in the rod by the angular' yoke 32 providing clearance for the operation of the lever and bringing the thrustbar into an operative plane with the tread of the wheels 9, which is lower than that of the wheels 5.

The bar4l passes loosely through the brakebeam 17, the outer end 42 being threaded for adjustment and carrying the nut 43 adjustably thereon, and between the face of the extension 40 and the beam 17 are arranged spring-plates44-45 and an intermediate spiral (or other form) spring 46, by preference there beinga nut 43a working on threads on the bar 41, as shown in Fig. 4, and located back of the spring 46, preferably between the extension 40 and plate 44, whereby the tension of the spring can be regulated and the shoe 18 can be adjusted toward the wheel to com pensate for wear. The beams 17 and shoes 18 are'thus supported by the brake-rod and partake of its movements. By supporting the rods directly upon the truck-frame and the brake beams and shoes upon the brake-rods, as distinguished from supporting the shoes by links from the truck-frame and connecting the beams ywith the shoes, so as to ycause the beams to be .supported by the shoes, as has been the prior practice, the customarysupport through such brake -hange'rs and their links is dispensed with. The beam and shoes are supported entirely by the brake rod or rods and which former have no connection tothe truck-frame except indirectly through the vcasting 27 and pivot 3'8- or equivalent support for the rods.

The upper ends 47 of the levers 35 are pivotally secured to the arms 48 of the segmental bar 49 and in their turn to the pull-rod 50, leading from a suitable or usual source of power, the rod being movably connected with the equalizing-bar by the roller 51, secured to the taking usually about eighty per cent. and the small wheels 9 about twenty, the nuts 24 24a 43 43for turnbuckle 22 being afterward used for adjustment. The shoes being olf, movement of the rod 50 in the direction of the arrow will draw the rods 19 rearwardly, (toward the right in the drawings,) bodily carrying the respective sets of shoes to the treads of the wheels against the stress of the springs. l The springs 46 being of less resistance than the springs 30 allow the shoes 16 to be applied or take a bearing before the-shoes 18, and by a continuance of the pressure or power both sets of shoes take bearing on the wheels treads to the extent designed. On the release of the pressure the springs 30 act to retract or release the shoes.

As will be observed, the movement of the brake-rods is a direct one, whereby great rapidity of action may be obtained, and the brake rods and beams have but two points of suspension as to each-one pivotal, the other sliding-thereby doing away with extra parts or elements and unnecessary friction.

To allow for the slight rise of the rods 19 due to the arcial travel of the pin 34, provision for play between the rods and the beams and blocks can be made without undue rattling of the parts, or the thrust-bars can be allowed to rise slightly without injurious results.

Although vI prefer to employ my movements in conjunction with the parallel rod 1l), levers 35, and single equalizingbar 49, so as to prevent swiveling and equalization of the 'pressure on all the shoes and to leave the space within the truck clear for the mounting of the motor, truck-bearings, dac., it is evident that my invention would be embodied in certain respects if only one rod 19 and its associated-parts were used instead of two and, for example, located centrally of the beams, as it would be if the rod 20, Fig. 3, were used and it be centrally located relative to the length of the beams, or otherwise, as

desired.

Having described my invention, I claim- 1. In abrake mechanism, the combination with the truck-frame, of a brake-rod, brakebeams supported by saidV rod, and brakeshoes supported by the beams, the rod being movably supported directly upon said frame, substantially as described.

2. Iniabrake mechanism, the combination with the truck-frame, of the longitudinal brake-rod movably supported on the truckframe at one end, a brake-beam secured to vsaid rod adjacent said end, shoes supported on and by said beams, a movable support for the rod on the truck-frame at the other end, a brake-beam secured to the rod at the latter end, and brake-shoes supported on and by said beams, substantially as described.

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3. In abrake mechanism, the combination with the truck-frame, of a brake-rod supported for longitudinal movement at one end by said frame and pivotallysupported by said fra-me at the other end, pairs of wheels for the truck, and beams and paired shoes supported the former on and by the rod the latter on and by the beams, substantially as described.

4. A brake mechanism comprising brake beams and shoes, a longitudinallyLdisposed brake-rod upon which the brake-beam is su pported, and to which the beam is operatively connected, and means for supporting the brake-rod, substantially as described.

5. A brake mechanism comprising brake beams and shoes, a longitudinally-disposed brake-rod, a bearing for supporting thesame to permit it to have longitudinal movement, means for supporting the brake-beam upon said rod, and means for operating the brakerod, substantially as described.

G. A brake mechanism comprising brake beams and shoes, a brake-rod, means for supporting the same, means` for firmly uniting one brake-beam `tosaid rod to support and operate the beam thereby, the other brakebeam being movably supported by said rod, means to cause the rod to operate said beam, and means for operatingsaid rod, substantially as described. i

7. A truck-frame combined with a brake mechanism comprising brake beams and shoes, a longitudinally disposed' brake-rod directly supported on the truck-frame and adapted to operate directly one of the brakebeams,a spring interposed between the brakerod and the other brake-beam, and means for drawing the brake-rod longitudinally to cause said spring to act on the adjacent brake-beam substantially as described.' A

8. A truck-frame combined with a brake mechanism comprising brake. beams and shoes, a longitudinally-disposed.brake-rod `directly supported on the truck -frame and adapted to operate one of the brake-beams dip rectly, aspringinterposed between the brakerod and the other brake-beam, a lever to operate said brake-rod to cause said spring to push the adjacent brakebeam toward the wheels, and means for operating said lever, substantially as described.

9. A brake mechanism comprising a pair of brake beams and shoes, a brake-rod to draw one of the brake-beams toward the wheels, a spring to retract the brake-rod, an abutment for said spring, a spring interposed between the brake-rod and the other brake-beam, and means for causing the brake-rod to act upon said spring, substantially as described.

10. A brake mechanism comprising a pair of brake beams and shoes, a longitudinallydisposed brake-rod connected with one beam so as to draw said beam and shoes toward wheels, a spring to retract said brake-rod, an abutment for said spring, said brake-rod having a portion passing through the outer brakebeam, means connected with said rod to retract said beam from wheels, a spring interposed between said beam and the brake-rod,

and means for operating said rod, substan-` tially as described.

l1. The'combiuation of a truck frame and wheels,with a pair of brake beams and shoes, a longitudinally-disposed brake-rod, a stationary support for said rod Acarried by the frame, said brake-rod being connected with one brake-beam to draw the same 'toward wheels, said rod being movably connected with Athe other brake-beam, a spring interposed between said rod and the last-mentioned beam, and means for operating the rod, substantially as described.

12. The combination of a truck frame and wheels,with a pair of brake beams and shoes, a longitudinally-disposed brake-rod, a stationary support for said rod carried by the frame, said brake-rod being connected with one brake-beam to draw the same toward wheels, said rod being movably connected with the other brakebeam,a spring interposed between said rod andthe last-mentioned beam, a lever pvotally supported by said frame and pivotally connected with said rod for operating the same, and means for actuating said lever, substantially as described.

13. The combination of a frame and wheels, with a pair of brake beams and shoes, a longitudinally-diposed brake-rod, a support for thesame carried by the frame, a spring interposed between said rod and said support, a connection between said rod and one bf the brake-beams to cause the rod to draw the latter toward wheels,said rod being movably con-V nected with the other brake-beam, a spring interposed between the last-mentioned beam and the rod, and means for operating said rod, substantially as described.

14E. The combination of a frame and wheels, with a pair ot' brake beams and shoes, a longitudinally-disposed brake-rod, a support for the same carried by theframe, a spring interposed between said rod and said support, connections between said rod and one of the brake-beams to cause the rod to draw the latter toward wheels against the stress of said spring,said rod being movably connected with the other brake-beam, a spring interposed between the lastmentioned beam and the rod,

a lever pivotally supported by said frame'andl pivotally connected to' said rod, and means for actuating the lever, substantially as de` scribed.

l5. The combination of a ltruck frame and wheels, with a pair of brake beams and shoes,

a longitudinally-disposed rod,a support carried by said frame and having a bearing for the lrod to slide in, a spring to retract and oppose the sliding of the rod, means for connecting the rod with one of the brake-beams to draw the latter toward the Wheels, the opposite end ofl said rod being movably connected with the other brakebeam,`a spring interposed between said rod and latter beam, and means for operating said rod, substan` tially as described.

16. The combination of a truck frame and wheels, with a pair of brake beams and shoes,

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with one of the brake-beamsl to draw the latter toward the wheels, the opposite end of said rod being movably connected with the otherI brake-beam, a spring of lesser resisting capacity interposed between said rod and latter beam, and means for operating said rod substantially as described.

17. The combination of a truck frame and w-heels, with brake beams and shoes, a longitudinally-disposed rod having a portion on one plane connected with one of the beams, a stationary support for said rod carried by the frame, means to retract the rod, another portion of said rod being on a lower plane than the rst-mentioned portion and movably connected with the other beam, a spring surrounding the lower portion of the rod and interposed between the rod and last-mentioned beam, and means for operating said rod, substantially as described.

18. The combination of a truck frame and wheels, with brake beams and shoes, a longitudinally-disposed rod having a portion on one plane connected with one of the beams, a stationary support for said rod carried by the frame, means to retract the rod, another portion of said rod being on a lower plane than the iirst-mentioned portion and movably connected with the other beam, a spring surrounding the lower portion of the rod and interposed between the rod and the last-mentioned beam, a lever pivotally carried by the said frame and pivotally connected to the rod between its ends, and means for operating the lever, substantially as described.

19. The combination of a truck frame and wheels, with a pair of brake beams and shoes, a longitudinally-disposed rod connected with one of said beams, a stationary support for the rod on the truck-frame, a spring interposed between said rod and the other of said beams, said rod having a slotted yoke, a lever pivoted to said slot and pivotally connected with said frame, said rod having a pendent extension provided with a thrust-bar movabl y connected with the other brake-beam, and a spring interposed between said extension and said brake-beam, substantially as described.

20. The combination of a truck frame and wheels, with a pair of brake-beams, brakeshoes carried thereby, a longitudinally-disposed rod connected to one of said brakebeams, a stationary support for said rod carried by the truck-frame, a spring interposed between said support and an abutment upon the end of said rod, a slotted yoke carried by said rod, a lever pivoted in and passing through said slot, a pendent end provided upon said bar, a thrust-bar connected to said yoke and movably connected to the other brake-beam, a spring interposed between said extension and said brake-beam, and an abutment carried by said bar on the side of said beam opposite the spring, substantially as described.

21. The combination of a truck frame and wheels with a pair of brake beams and shoes,

a longitudinally-disposed rod connected with one of said beams, a slotted yoke carried by said rod, a brake-lever passing through said slot and pivoted in said yoke, a support carried by said fra-me, through which said rod is adapted to slide, an abutment carried upon the end of said rod, a spring interposed between said abutment and said support, and mechanism movably connecting said rod with the other brake-beam, substantially as described.

22. The combination of a truck frame and wheels, with a pair of brake beams and shoes, a lon gitudinally-disposed rod connected with one of said beams, a slotted yoke carried by said rod, a brake-lever pivoted in said slot, and pivotally connected to the frame, athrustbar connected to said yoke, movably connected to said other brake-beam, a spring interposed between said bar and beam, and an abutment carried upon the end of said bar on the side of said brake-beam opposite said spring, substantially as described.

23. The combination in a car-truck, of the frame comprising side beams and cross-bars, and a brake mechanism comprising a longitudinally-extending rod supported directly from the truck-frame to the end and adapted to slide in its support, a brake-beam and brake-shoes supported by said rod, one of the cross-bars being between the wheels, an upwardly-extending operating-lever fulcrumed upon the latter cross-bar, the brake-rod being pivotally secured thereto above the latters fulcrum, a brake-beam loosely supported upon the other end of the rod, an abutment on the rod between the latter beam and said lever, a spring interposed between said beam and said abutment, and brake-shoes on said latter beam.

241. The combination in a car-truck, of the truck-frame having a cross-bar 11 outside of one set ot wheels, a cross-bar 13 between the wheels, the thrust-block secured to the bar 11, and having a longitudinal aperture, a brake-rod having one end extending through the aperture, the other end passing over the bar 13 toward the other set of wheels, a brake beam and shoes supported on the brake-rod adjacent the thrust ,block, a brake beam loosely supported upon the other end ot' the rod and carrying brake-shoes, an upright lever fulcrumed on the cross-bar 13, and pivotally connected to the brake-rod above said fulcrum, an abutment on the brake-rod, a spring interposed between said abutment and the loosely-connected brake-beam, and a retracting-spring on the end of the rod adjacent the thrust-block.

25. The combination in a car-truck, having a frame, a cross-bar 11 outside of the wheels at one end, another cross-bar 13 between the wheels, with the parallel brake-rods, supports on the cross-bar 11 permitting the rod to slide therein, a brake-beamextending between the rods and having shoes thereon adjacent said support, a retracting-spring coperating with IOO IIO

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the ends of the rods at this end of the truck, upright brake-levers fulcrurned on the crossbar 13 and pivotally secured to the brake-rods above their fulcra, an equalizing-lever connected to said brake-levers above the brakerods; a brake-beam supported loosely on the ends of the brake-rods opposite said supports and having brakeshoes, an abutment on said brake-rods, and -a spring interposed between each of said abutments and the latter brake-beam.

26. In abrake mechanism, the combination with the car-truck having a frame', includin g a cross-bar as 11,the lon gitudinally-apertu red thrust-block secured to the cross-bar, the brake-rod extending through said aperture, a spring about said extension, a eap fixed on the end of the rod bearing against said spring the other end of the springbearing against the thrust-block, said rod carrying beams and shoes for the respective sets of truck- Wbeels, a support for the brake-rod upon the truck-frame other than the thrust-block, and means for longitudinally moving the brakerod for applying the respective sets of shoes to the sets of Wheels.

27. In a car-truck, the Combination with a frame thereof, and a brake mechanism oomprising a longitudinal brake-rod having the slotted yoke 32, a pendent portion 40, and an extension 4l therefrom; a cross-bar 18V disposed below the said brake-rod, and abrakelever 35 pivotally secured to the cross-bar 13, passing through the slot, and pivotally secured to the yoke, and brake beams and shoes operated by said lever and rod, substantially as described.

Signed at the city and county of Philadelphia, State of Pennsylvania, this 24th day of July7 1900.

WALTER S. ADAMS. Witnesses:

WM. J. FERDINAND, TERRENCE MoCUsKER. 

